Any DCS World keys purchased from other sources are invalid and are simply trying to re-sell keys that are bound to other users or purchased through fraud. Such sites include Kinguin, CDExpress and G2A.

If you purchase DCS World keys from these sites, we cannot help you. We suggest you contact these sites for a refund.

Post your file if you like and I'll take a look. It may be that the peak is so much louder than the average volume of the content (like a "p" pop or mic handling noise frequently are) that compressing the file doesn't catch enough to bring the peak down sufficiently without extremely aggressive settings.

I'm an audio engineer by trade so I can probably get it sorted for you.

I have recorded many audio files for DCS and also experienced that playback in the ME is very low volume. Same file plays somewhat louder in the 3D world; nevertheless, I adjust sound file volumes much louder than normal.

When I'm editing sound files for mission's, I set my main volume to half what I play at, and use that as a "benchmark" for where they need to be. For whatever reason they are much quieter in game than on say, audacity.